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An Introduction to Geology – Free Textbook for College-Level ...
Physical Geology - Open Textbook Library
Download a PDF – Physical Geology – 2nd Edition
Geological Structures: a Practical Introduction - Open Textbook …
An Introduction to Geology (Johnson, Affolter, Inkenbrandt, and Mosher)
Introduction to Earth Science - Open Textbook Library
Physical Geology – Open Textbook - BCcampus Open Publishing
Geology Textbooks - Google Drive